Description

IC DC DC CONVERTER
The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include fault protection and a fixed-frequency oscillator. The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50-μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Specifications

Topology:

Buck (Step Down)

Input Voltage Min:

4V

Input Voltage Max:

40V

DC / DC Converter IC Case:

TO-263

No. of Pins:

5Pins

Output Current:

3A

Output Voltage Nom.:

12V

Switching Frequency:

52kHz

Operating Temperature Max:

125°C

Product Range:

-

Automotive Qualification Standard:

-

RoHS Phthalates Compliant:

Yes

MSL:

MSL 3 - 168 hours

SVHC:

No SVHC (27-Jun-2018)

Accuracy %:

4%

Base Number:

2576

Frequency:

52kHz

No. of Outputs:

1Outputs

Operating Temperature Min:

-40°C

Operating Temperature Range:

-40°C to +125°C

Output Voltage:

37V

Output Voltage Max:

12V

Primary Input Voltage:

25V

Supply Voltage Max:

40V

Supply Voltage Min:

15V

Termination Type:

Surface Mount Device

Voltage Regulator Type:

Step Down (Buck)

Alternate Descriptions

Avnet America

Conv DC-DC Single Inv/Step Down 4V to 40V 6-Pin(5+Tab) TO-263 Rail

Avnet Europe

Conv DC-DC Single Inv/Step Down 4V to 40V 6-Pin(5+Tab) TO-263 Rail

Texas Instruments

SIMPLE SWITCHER® 40V, 3A Low Component Count Step-Down Regulator

Distrelec

1.76

Conrad

Integrated circuits from leading manufacturers. Please read our extensive documentation which is free to download.